| 1. large rivers like Amazon and Congo enter into the sea. |
| 2. evaporation is less. |
| 3. waters from Arctic and Antarctic mix with the waters of equator. |
| 4. of heavy rainfall |
A) 1 and 2
B) 3 and 4
C) 1 and 3
D) 1 and 4
Correct Answer: D
Solution :
Salanity of waters in the equatorial oceans decreases because of the high rainfall and introduction of water by rivers like congo and amazon. Salanity gets reduced after addition of water due to its dilution which means now the water has less salt per litre of water.
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